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- To enable 1600x1200 screen modes with your RISC PC add the contents of the
- 1600x1200 file to the end of your monitors mode definition file held in the
-
- ADFS::HardDisc4.$.!Boot.Resources.Configure.Monitors.Acorn
-
- direcory....
-
-
- It will only really be visibale on 17"+ monitors, eg. AKF85
-
- The defintion included uses a pixel rate of 152000 , this is the limit I
- found that still allows 16 colours with 1 Mb of VRam and gives a refresh
- rate of 56Hz. This can be dropped to the rate of 135000 (50Hz) as Acorn
- initialy supplied or a greater rate (but with less colours)
-
- I belive (but can not confirm) that rates of 135000 and higher are all above
- the *official* tolerance for the VIDC 20 chip so different machines may not
- be able to cope, you will just have to drop the pixel rate if you run into
- problems.
-
- From Peter Reeves-Hall
-
-